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Tomotsumi Fujisawa

Researcher at Saga University

Publications -  45
Citations -  1014

Tomotsumi Fujisawa is an academic researcher from Saga University. The author has contributed to research in topics: Raman spectroscopy & Chromophore. The author has an hindex of 16, co-authored 41 publications receiving 799 citations. Previous affiliations of Tomotsumi Fujisawa include Brookhaven National Laboratory & Chiba University.

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Development of an Azo-Based Photosensitizer Activated under Mild Hypoxia for Photodynamic Therapy

TL;DR: It is shown that the azo group is reductively cleaved in cells under hypoxia, enabling production of 1O2 to occur, and this simple and practical azo-based strategy should be widely applicable to design a range of activatable photosensitizers.
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Heavy atom substitution effects in non-aromatic ionic liquids: ultrafast dynamics and physical properties.

TL;DR: It is found that the first moment of low-frequency Kerr spectrum correlates to the square root of surface tension divided by density, indicating that heavy atom substitution in ionic liquids provides a weaker interionic interaction arising from the larger ionic volume.
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Ultrafast Dynamics in Aprotic Molecular Liquids: A Femtosecond Raman-Induced Kerr Effect Spectroscopic Study

TL;DR: In this paper, the ultrafast dynamics of forty aprotic molecular liquids were studied by femtosecond optical heterodyne-detected Raman-induced Kerr effect spectroscopy.
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Comparison of interionic/intermolecular vibrational dynamics between ionic liquids and concentrated electrolyte solutions.

TL;DR: Compared the interionic/intermolecular vibrational dynamics of ionic liquids (ILs) and concentrated electrolyte solutions measured by femtosecond optically heterodyne-detected Raman-induced Kerr effect spectroscopy, the comparison based on the first moment of the interdimensional vibrational spectrum suggests the stronger interionics/interMolecular interaction in the concentrated electrolye solutions than the ILs.
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Role of Coherent Low-Frequency Motion in Excited-State Proton Transfer of Green Fluorescent Protein Studied by Time-Resolved Impulsive Stimulated Raman Spectroscopy.

TL;DR: This work examined the excited-state structural evolution and the ESPT dynamics within the dephasing time of the low-frequency vibration of GFP, and found a clear anharmonic vibrational coupling between one high-frequency mode of the chromophore and a low- frequencies at ∼104 cm(-1).